CN212651597U

CN212651597U - Industrial lime desulphurization device

Info

Publication number: CN212651597U
Application number: CN202020110311.4U
Authority: CN
Inventors: 徐超
Original assignee: Shandong Nuofen Electric Equipment Co ltd
Current assignee: Shandong Nuofen Electric Equipment Co ltd
Priority date: 2020-01-18
Filing date: 2020-01-18
Publication date: 2021-03-05
Anticipated expiration: 2030-01-18

Abstract

The utility model discloses an industrial lime desulphurization unit relates to lime desulfurization field, and is inefficient to current industrial lime desulfurization, and consumes the problem of manpower, now proposes following scheme, and it includes absorption tower, circulating pump circulating tank, pressure filter, lime storehouse and lime pond, the absorption tower is installed on the top in circulating tank, just install the same circulating pump of three structure around the absorption tower, be connected between the water inlet of circulating pump and the circulating tank, just the delivery port and the absorption tower of circulating pump are connected, one side and the pressure filter in circulating tank are connected. The utility model discloses not only can solve the flue gas particulate matter that the desulfurization water produced, can solve desulfurization water quality of water problem simultaneously, solve the outer phenomenon of arranging of desulfurization water moreover, can long-term recycle, resources are saved has effectively controlled the scale deposit and the jam problem of desulfurization pipeline and shower nozzle simultaneously, improves desulfurization efficiency, reduces manual operation time, suitable popularization.

Description

Industrial lime desulphurization device

Technical Field

The utility model relates to a lime desulfurization field especially relates to an industrial lime desulphurization unit.

Background

The principle of quicklime desulfurization is a neutralization reaction process, and sulfur dioxide generated by sulfur combustion is absorbed through the reaction between quicklime and SO2 (CaO + SO2= CaSO3), SO that the reaction is converted into a desulfurization byproduct in a stable state, and the aim of desulfurization is fulfilled. Sulfur dioxide belongs to an acidic valence, quicklime belongs to a strong alkaline medium, and kinetic energy provided by a circulating pump and a booster fan is utilized to carry out gas-liquid two-phase reverse contact reaction in an absorption tower by utilizing acid-base neutralization and redox principles of the quicklime to generate CO2 and hydrous calcium sulfate. The quick lime is lifted to a feeding platform, is fed into a storage bin from a feeding port and reacts with SO2 in a flue to generate a sulfate and sulfite mixture. This is because the calcium salt contained in the quicklime or slaked lime can react with SO2 in the flue gas to form deposit of sulfur in the flue gas. The adding method of the quicklime flue gas desulfurization comprises a dry adding method and a wet adding method, and the wet adding method is mainly used in the actual desulfurization process.

Traditional industrial lime desulfurization technique is when carrying out the desulfurization operation, easily makes the desulfurization water discharge and produces the pollution, causes the waste of water resource simultaneously, and desulfurization pipeline and shower nozzle easily block up moreover and cause desulfurization efficiency lower, and consume the manpower, consequently, in order to solve this type of problem, we have provided a lime desulphurization unit for industry.

SUMMERY OF THE UTILITY MODEL

The utility model provides an industrial lime desulphurization device has solved current industrial lime desulfurization inefficiency, and has consumeed the problem of manpower.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an industrial lime desulphurization unit, includes absorption tower, circulating pump circulation pond, pressure filter, lime storehouse and lime pond, the absorption tower is installed on the top in circulation pond, just install the circulating pump that three structures are the same around the absorption tower, be connected between the water inlet of circulating pump and the circulation pond, just the delivery port and the absorption tower of circulating pump are connected, one side and the pressure filter in circulation pond are connected, just one side and the lime pond that the pressure filter was kept away from in the circulation pond are connected, the lime pond is connected with the lime storehouse, just the lime pond is connected with the pressure filter.

Preferably, conduits are connected between the circulating pump and the absorption tower and between the circulating pump and the circulating pool, between the circulating pool and the filter press and between the circulating pool and the lime pool, and between the lime pool and the filter press and between the lime bin.

Preferably, an oxygen supply machine is installed on one side of the lime pool, and an air outlet of the oxygen supply machine extends to the interior of the lime pool.

Preferably, a mortar pump is arranged between the lime pool and the filter press.

Preferably, a water replenishing pump is arranged between the circulating tank and the lime tank.

Preferably, a water feeding pipe is arranged on the circulating tank.

Preferably, the process flow for industrial lime desulfurization comprises the following steps:

s1, pumping the desulfurization circulating water into the lime slurry through a water replenishing pump for neutralization, and pumping air into the lime pool by using an oxygen supply machine to accelerate oxidation reaction of the lime slurry and generate calcium sulfate;

s2, pumping the mortar solution into a filter press by using a mortar pump to filter out ash slag and other dregs such as calcium sulfate and the like, and simultaneously producing alkaline water with a pH value of fourteen to flow into a circulating pool again;

and S3, when the concentration of the slurry in the lime pit is low, the lime bin feeds lime through a screw conveyor.

The utility model has the advantages that: the design subverts the form of desulfurization by mortar of the limestone-gypsum method desulfurization process, adopts a brand new idea to use clear lime liquid as basic alkali substance, and has the following advantages:

1. the flue gas particles generated by the desulfurization water in the lime desulfurization process are solved, the problem of the quality of the desulfurization water is solved, and the quality of the desulfurization water is kept clear;

2. the phenomenon of discharging the desulfurization water is solved, the pollution of the desulfurization water to the environment is reduced, and meanwhile, the desulfurization water in the lime desulfurization process can be recycled for a long time without frequent water change, so that the resources are saved, and the environment is protected;

3. because of using clear water desulfurization effectively to control the scale deposit of desulfurization pipeline and shower nozzle and the corresponding desulfurizing tower maintenance time that has reduced of problem of jam to system automatic operation can guarantee that the desulfurization is up to standard for a long time, has reduced manual operation time again.

To sum up, the device not only can solve the flue gas particulate matter that the desulfurization water produced, can solve the desulfurization water quality of water problem simultaneously, has solved the outer phenomenon of arranging of desulfurization water moreover, but long-term cyclic utilization, resources are saved has effectively controlled the scale deposit and the jam problem of desulfurization pipeline and shower nozzle simultaneously, improves desulfurization efficiency, reduces manual operation time, suitable popularization.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Reference numbers in the figures: 1 absorption tower, 2 filter presses, 3 circulation tanks, 4 mortar pumps, 5 lime pools, 6 oxygen supply machines, 7 lime bins, 8 water replenishing pumps and 9 circulation pumps.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1, an industrial lime desulfurization device comprises an absorption tower 1, a circulating pump 9, a circulating tank 3, a filter press 2, a lime bin 7 and a lime tank 5, wherein the absorption tower 1 is installed at the top end of the circulating tank 3, three circulating pumps 9 with the same structure are installed around the absorption tower 1, a water inlet of each circulating pump 9 is connected with the corresponding circulating tank 3, a water outlet of each circulating pump 9 is connected with the absorption tower 1, one side of the corresponding circulating tank 3 is connected with the corresponding filter press 2, one side, far away from the filter press 2, of each circulating tank 3 is connected with the corresponding lime tank 5, the lime tank 5 is connected with the corresponding lime bin 7, the lime tank 5 is connected with the corresponding filter press 2, guide pipes are connected between the circulating pumps 9 and the absorption tower 1 and the circulating tank 3, between the corresponding circulating tank 3 and the filter press 2 and the lime tank 5, and between the corresponding lime tank 5, an oxygen supply machine 6 is installed on one side of the lime pool 5, an air outlet of the oxygen supply machine 6 extends to the inside of the lime pool 5, a lime slurry pump 4 is installed between the lime pool and the filter press 2, a water replenishing pump 8 is installed between the circulating pool 3 and the lime pool 5, and a water adding pipe is installed on the circulating pool 3.

The process flow for desulfurizing the industrial lime comprises the following steps:

s1, pumping the desulfurization circulating water into the lime slurry through a water replenishing pump 8 for neutralization, and pumping air into the lime pool 5 by using an oxygen supply machine 6 to accelerate oxidation reaction of the lime slurry and generate calcium sulfate;

s2, pumping the mortar solution into the filter press 2 by using a mortar pump 4 to filter out ash, calcium sulfate and other dregs, and simultaneously producing alkaline water with a pH value of fourteen to flow into the circulating pool 3 again;

and S3, when the slurry concentration of the lime pool 5 is low, the lime bin 7 feeds lime through a screw conveyor.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an industrial lime desulphurization unit, includes absorption tower (1), circulating pump (9) circulation pond (3), pressure filter (2), lime storehouse (7) and lime pond (5), its characterized in that, absorption tower (1) is installed on the top of circulation pond (3), just install three circulating pump (9) that the structure is the same around absorption tower (1), be connected between the water inlet of circulating pump (9) and circulation pond (3), just the delivery port and the absorption tower (1) of circulating pump (9) are connected, one side and the pressure filter (2) of circulation pond (3) are connected, just one side and the lime pond (5) that the pressure filter (2) was kept away from in circulation pond (3) are connected, lime pond (5) are connected with lime storehouse (7), just lime pond (5) are connected with pressure filter (2).

2. The industrial lime desulfurization device according to claim 1, characterized in that conduits are connected between the circulation pump (9) and the absorption tower (1) and the circulation tank (3), between the circulation tank (3) and the filter press (2) and the lime tank (5), and between the lime tank (5) and the filter press (2) and the lime bin (7).

3. The industrial lime desulfurization device according to claim 1, wherein an oxygen supply machine (6) is installed at one side of the lime pit (5), and an air outlet of the oxygen supply machine (6) extends to the inside of the lime pit (5).

4. An industrial lime desulphurization device according to claim 1, characterized in that a lime slurry pump (4) is installed between the lime pit and the filter press (2).

5. An industrial lime desulphurization unit according to claim 1, characterized in that a make-up pump (8) is installed between the circulation tank (3) and the lime tank (5).

6. An industrial lime desulphurization unit according to claim 1, wherein the circulation tank (3) is provided with a water feed pipe.